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Michael D. Petzoldt
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Chesterfield, MO, US
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last 30 patents
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Method for manufacturing superplastic forming/diffusion bonding too...
Patent number
5,300,159
Issue date
Apr 5, 1994
McDonnell Douglas Corporation
Michael D. Petzoldt
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...